Limits on Spin-Dependent WIMP-Nucleon Cross Section Obtained from the Complete LUX Exposure

D S Akerib; S Alsum; H M Araújo; X Bai; A J Bailey; J Balajthy; P Beltrame; E P Bernard; A Bernstein; T P Biesiadzinski; E M Boulton; P Brás; D Byram; S B Cahn; M C Carmona-Benitez; C Chan; A A Chiller; C Chiller; A Currie; J E Cutter; T J R Davison; A Dobi; J E Y Dobson; E Druszkiewicz; B N Edwards; C H Faham; S R Fallon; S Fiorucci; R J Gaitskell; V M Gehman; C Ghag; M G D Gilchriese; C R Hall; M Hanhardt; S J Haselschwardt; S A Hertel; D P Hogan; M Horn; D Q Huang; C M Ignarra; R G Jacobsen; W Ji; K Kamdin; K Kazkaz; D Khaitan; R Knoche; N A Larsen; C Lee; B G Lenardo; K T Lesko; A Lindote; M I Lopes; A Manalaysay; R L Mannino; M F Marzioni; D N McKinsey; D-M Mei; J Mock; M Moongweluwan; J A Morad; A St J Murphy; C Nehrkorn; H N Nelson; F Neves; K O'Sullivan; K C Oliver-Mallory; K J Palladino; E K Pease; L Reichhart; C Rhyne; S Shaw; T A Shutt; C Silva; M Solmaz; V N Solovov; P Sorensen; S Stephenson; T J Sumner; M Szydagis; D J Taylor; W C Taylor; B P Tennyson; P A Terman; D R Tiedt; W H To; M Tripathi; L Tvrznikova; S Uvarov; V Velan; J R Verbus; R C Webb; J T White; T J Whitis; M S Witherell; F L H Wolfs; J Xu; K Yazdani; S K Young; C Zhang; LUX Collaboration

doi:10.1103/PhysRevLett.118.251302

Limits on Spin-Dependent WIMP-Nucleon Cross Section Obtained from the Complete LUX Exposure

Phys Rev Lett. 2017 Jun 23;118(25):251302. doi: 10.1103/PhysRevLett.118.251302. Epub 2017 Jun 23.

Authors

D S Akerib^{1

2

3}, S Alsum⁴, H M Araújo⁵, X Bai⁶, A J Bailey⁵, J Balajthy⁷, P Beltrame⁸, E P Bernard^{9

10}, A Bernstein¹¹, T P Biesiadzinski^{1

2

3}, E M Boulton^{9

10

12}, P Brás¹³, D Byram^{14

15}, S B Cahn¹⁰, M C Carmona-Benitez^{16

17}, C Chan¹⁸, A A Chiller¹⁴, C Chiller¹⁴, A Currie⁵, J E Cutter¹⁹, T J R Davison⁸, A Dobi¹², J E Y Dobson²⁰, E Druszkiewicz²¹, B N Edwards¹⁰, C H Faham¹², S R Fallon²², S Fiorucci^{12

18}, R J Gaitskell¹⁸, V M Gehman¹², C Ghag²⁰, M G D Gilchriese¹², C R Hall⁷, M Hanhardt^{6

15}, S J Haselschwardt¹⁷, S A Hertel^{10

12

23}, D P Hogan⁹, M Horn^{9

10

15}, D Q Huang¹⁸, C M Ignarra^{2

3}, R G Jacobsen⁹, W Ji^{1

2

3}, K Kamdin⁹, K Kazkaz¹¹, D Khaitan²¹, R Knoche⁷, N A Larsen¹⁰, C Lee^{1

2

3}, B G Lenardo^{11

19}, K T Lesko¹², A Lindote¹³, M I Lopes¹³, A Manalaysay¹⁹, R L Mannino²⁴, M F Marzioni⁸, D N McKinsey^{9

10

12}, D-M Mei¹⁴, J Mock²², M Moongweluwan²¹, J A Morad¹⁹, A St J Murphy⁸, C Nehrkorn¹⁷, H N Nelson¹⁷, F Neves¹³, K O'Sullivan^{9

10

12}, K C Oliver-Mallory⁹, K J Palladino^{2

3

4}, E K Pease^{9

10

12}, L Reichhart²⁰, C Rhyne¹⁸, S Shaw^{17

20}, T A Shutt^{1

3}, C Silva¹³, M Solmaz¹⁷, V N Solovov¹³, P Sorensen¹², S Stephenson¹⁹, T J Sumner⁵, M Szydagis²², D J Taylor¹⁵, W C Taylor¹⁸, B P Tennyson¹⁰, P A Terman²⁴, D R Tiedt⁶, W H To^{1

2

3

25}, M Tripathi¹⁹, L Tvrznikova^{9

10

12}, S Uvarov¹⁹, V Velan⁹, J R Verbus¹⁸, R C Webb²⁴, J T White²⁴, T J Whitis^{1

2

3}, M S Witherell¹², F L H Wolfs²¹, J Xu¹¹, K Yazdani⁵, S K Young²², C Zhang¹⁴; LUX Collaboration

Affiliations

¹ Case Western Reserve University, Department of Physics, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA.
² SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94205, USA.
³ Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, California 94309, USA.
⁴ University of Wisconsin-Madison, Department of Physics, 1150 University Avenue, Madison, Wisconsin 53706, USA.
⁵ Imperial College London, High Energy Physics, Blackett Laboratory, London SW7 2BZ, United Kingdom.
⁶ South Dakota School of Mines and Technology, 501 East St. Joseph Street, Rapid City, South Dakota 57701, USA.
⁷ University of Maryland, Department of Physics, College Park, Maryland 20742, USA.
⁸ SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom.
⁹ University of California Berkeley, Department of Physics, Berkeley, California 94720, USA.
¹⁰ Yale University, Department of Physics, 217 Prospect Street, New Haven, Connecticut 06511, USA.
¹¹ Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94551, USA.
¹² Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA.
¹³ LIP-Coimbra, Department of Physics, University of Coimbra, Rua Larga, 3004-516 Coimbra, Portugal.
¹⁴ University of South Dakota, Department of Physics, 414E Clark Street, Vermillion, South Dakota 57069, USA.
¹⁵ South Dakota Science and Technology Authority, Sanford Underground Research Facility, Lead, South Dakota 57754, USA.
¹⁶ Pennsylvania State University, Department of Physics, 104 Davey Lab, University Park, Pennsylvania 16802-6300, USA.
¹⁷ University of California Santa Barbara, Department of Physics, Santa Barbara, California 93106, USA.
¹⁸ Brown University, Department of Physics, 182 Hope Street, Providence, Rhode Island 02912, USA.
¹⁹ University of California Davis, Department of Physics, One Shields Avenue, Davis, California 95616, USA.
²⁰ Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom.
²¹ University of Rochester, Department of Physics and Astronomy, Rochester, New York 14627, USA.
²² University at Albany, State University of New York, Department of Physics, 1400 Washington Avenue, Albany, New York 12222, USA.
²³ University of Massachusetts, Department of Physics, Amherst, Massachusetts 01003-9337, USA.
²⁴ Texas A&M University, Department of Physics, College Station, Texas 77843, USA.
²⁵ California State University Stanislaus, Department of Physics, 1 University Circle, Turlock, California 95382, USA.

PMID: 28696768
DOI: 10.1103/PhysRevLett.118.251302

Abstract

We present experimental constraints on the spin-dependent WIMP-nucleon elastic cross sections from the total 129.5 kg yr exposure acquired by the Large Underground Xenon experiment (LUX), operating at the Sanford Underground Research Facility in Lead, South Dakota (USA). A profile likelihood ratio analysis allows 90% C.L. upper limits to be set on the WIMP-neutron (WIMP-proton) cross section of σ_{n}=1.6×10^{-41} cm^{2} (σ_{p}=5×10^{-40} cm^{2}) at 35 GeV c^{-2}, almost a sixfold improvement over the previous LUX spin-dependent results. The spin-dependent WIMP-neutron limit is the most sensitive constraint to date.